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numpy: most efficient frequency counts for unique values in an array
...ncount(x)
ii = np.nonzero(y)[0]
And then:
zip(ii,y[ii])
# [(1, 5), (2, 3), (5, 1), (25, 1)]
or:
np.vstack((ii,y[ii])).T
# array([[ 1, 5],
[ 2, 3],
[ 5, 1],
[25, 1]])
or however you want to combine the counts and the unique values.
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How to create a video from images with FFmpeg?
...ideo filter instead of -r for the output framerate
ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4
Alternatively the format video filter can be added to the filter chain to replace -pix_fmt yuv420p like "fps=25,format=yuv420p". The advantage of this method is tha...
How to increase scrollback buffer size in tmux?
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3 Answers
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What's the difference between Jetty and Netty?
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3 Answers
3
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How to determine if an NSDate is today?
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310
In macOS 10.9+ & iOS 8+, there's a method on NSCalendar/Calendar that does exactly this!
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How does this CSS produce a circle?
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373
How does a border of 180 pixels with height/width-> 0px become a circle with a radius of...
Booleans, conditional operators and autoboxing
...nd operand to boolean)
E2: `true ? null : false` - Boolean (autoboxing of 3rd operand to Boolean)
See Java Language Specification, section 15.25 Conditional Operator ? :
For E1, the types of the 2nd and 3rd operands are Boolean and boolean respectively, so this clause applies:
If one of the...
Bulk package updates using Conda
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355
You want conda update --all.
conda search --outdated will show outdated packages, and conda u...